estimated 75% of products that consumers use including corn. back in new york city, you would think the heat would be good for iced cream sales. >> right now it is too hot. >> reporter: and people are still out tonight despite all of this heat. experts are reminding people to stay hydrated and that goes for your pets too. >> thank you. let's find out more about that storm threat and relief. kelly cast joins us now. >> reporter: millions of people sweating it out. from the midwest to now the east coa coast. you can see the area shaded in the darker orange that is dangerous heat to be hout doors make sure you stay hydrated. we have a cold front sagging to the south. new york city will get a cool wind cooling us back to average we are talking the mid 80s. severe weather a threat with that cool down. severe thunderstorm watches are in effect for the entire state of new jersey. right now philadelphia under a severe thunderstorm warning, dangerous lightening. this storm has a history of downing trees and power lines. >> kelly cast, thank you. and tor